For centuries, they had been born, had children, and died in this ship plodding through space. Finally, they were approaching their destination.
Most living now would one day step foot on solid ground. Even the Captain herself would probably see planetfall.
. . .
Suddenly, an alert: The ship detected a massive field of rocks, ice and stellar gases, directly in their path. Even if the hull survived the impacts, the extra radiation would be devastating to the crew.
With a heavy heart, the Captain ordered the course correction that would take them around the storm... and add 107 years to their journey.